John Chakalos, 87, was found shot to death in his Windsor, Connecticut, home on the morning of December 20, 2013. The shooting occurred while he slept; officers reported no signs of forced entry, and investigators concluded the assailant was likely someone known to him. Chakalos was a successful real estate developer with an estate estimated at over $42 million.

Investigators focused on his grandson, Nathan Carman, who had dined with Chakalos the night before and was reportedly the last person to see him alive. Police said Carman bought a rifle matching the caliber of the murder weapon shortly before the killing, though that rifle was never recovered. Authorities also reported Carman destroyed his computer hard drive and a GPS unit from his truck. An arrest warrant was submitted in 2014 but the prosecutor declined to sign it for want of additional evidence, and the case later went cold.

If anyone knew John Chakalos, his household, or saw Nathan Carman in Windsor around December 19–20, 2013, please share what you remember.